This flow triggers with a PowerApp button. A bunch of things happen but first action is send email from shared inbox. I don't have permission for that inbox, so I made my colleague a co-owner of flow and logged in with him into the flow so that he would set up his personal account connection. 100% sure that he has permission to that inbox, he can even send this email that show "In name of XXX".
I get this error in PowerAutomate "Request to Azure Resource Manager failed with error: '{"error":{"code":"InvokerConnectionOverrideFailed","message":"Could not find any valid connection for connection reference name 'shared_office365_1' in APIM header."}}'."
However, when I try to test this flow, it gives the error of no necessary permision. I'm sure as well that I'm selecting for that action the connection of the email of my colleague and not mine.
Sooooo... Do I have to set up something else?